Science & Mathematics - 19 October 2007

Given: d = 80m , T=7.1s

Determine the angle of the initial velocity with respect to the horizontal. (in radians)

Thanks!

2007-10-19 12:45:11 · 2 answers · asked by Anonymous in Physics

I mean they are furry so they should fly
plus they love meat so y cant they fly

2007-10-19 12:44:31 · 8 answers · asked by Greg the irish 1 in Zoology

like is there an easy way to know how to simplify

√20
√72

2007-10-19 12:35:59 · 13 answers · asked by Anonymous in Mathematics

im in 8th grade and we have to make a model for an element. i chose oxygen.

i need help
- describe chemical and physical properties or oxygen
- explain how oxygen bonds or how the atoms are help together
- is it flammable?
- what's its density?
- is it reactive? ( like is it reactive to chemicals like..? or what )
- how is oxygen useful to the world?

please please help!! and if u have any links that explains more, it would be GREATLY appreciated

2007-10-19 12:27:17 · 2 answers · asked by Anonymous in Other - Science

Was just curious to see if anyone has heard about it or read it, at christiananswers.net

2007-10-19 12:27:15 · 2 answers · asked by Cookie777 6 in Earth Sciences & Geology

To make this short we did a lab & I totally screwed up.

We were supposed to: imitate digesting a boiled egg (protein) with given substances. (Only directions). We had Pepsinogen, HCl, Bile, Pancreatic solution and water. We were to use 4 test tubes, and observe the qualitative process of digestion over a few days.

What we did: put the chopped boiled egg in HCl for 5 minutes. Put it in water for 5 min. Put it in Bile for 5 min and then put it in pancreatic solution for 2 days. Please dont laugh at me...but here;s my list of mistakes:

1. Didn't make the necessary Pepsin by mixing pepsinogen and HCl. In fact I didnt use Pepsinogen at all cuz I forgot)!

2. We didn't have a controlled factor (which should have been amount of HCL)...in which case pepsinogen would be independent.

3. Even if we did do that we needed to leave it in for longer than 5 min.

4. There is no pancreatic solution in protein digestion!!
HELP!
I have no control variable & can only discus 1 error!TY

2007-10-19 12:24:54 · 3 answers · asked by justmyinput 5 in Biology

what do you need to do to become an astronaut? (training education)

2007-10-19 12:24:31 · 6 answers · asked by harrypotter fan! 2 in Astronomy & Space

2007-10-19 12:22:48 · 14 answers · asked by Esmeralda 2 in Mathematics

determine a quadratic function F(x)=ax^2 + bx +c if it admits a maximum equal to 9 and passes through the points (1,-7) and (-1,-27)

if you would be kind enought to show the steps so that i can understand that would be really nice thank you

2007-10-19 12:17:17 · 4 answers · asked by ashtondelpiero 1 in Mathematics

Suppose we have the following Cost and Revenue Functions:

C(x) = 2x2 + 90 and R(x) = x2 + 20x

How might we create a Profit Function P(x)? What would it be?

Interpret P(8)=?

P(11)=?

P(13)=?

P(15)=?

2007-10-19 12:12:00 · 5 answers · asked by mlsz28 1 in Mathematics

A high-flying jet cruises at an altitude of 30,000 feet at a constant velocity of 700 km/h. The force of the jet engines is 40,000 N. How much air drag acts on the craft?

The only formula we were given is:
WEIGHT = MASS x GRAVITY


Thank you!

2007-10-19 12:10:27 · 2 answers · asked by Anonymous in Physics

Is it because God made some people intelligent and some not intelligent....

2007-10-19 12:07:32 · 11 answers · asked by Natasha 2 in Other - Science

(forget the fact its red hot in the middle), and dropped a brick through the hole would it come out the other side or eventually stop in the middle?

2007-10-19 12:07:01 · 15 answers · asked by Anonymous in Physics

Many years ago I heard a rumour that the Russian cosmonaut Yuri Gagarin was not actually the first man in space the first man to return from space. From what I remember the first cosmonaut was unable to return to earth and his ship bounced off the atmosphere. Can anyone else remember this or confirm it

2007-10-19 12:03:40 · 10 answers · asked by penfold 2 in Astronomy & Space

Ok... My sister just told me about a tsunami that might hit japan ((her friend found it on the computer) and it's goin got be so big, that it will change the days like longer or shorther and change teh rotation of the earth.. i don;t think it could happen, but does ne 1 the website or ne info on it?? thanx!!

2007-10-19 12:03:30 · 3 answers · asked by ஐC*h*e*l*s*i*eஐ 2 in Weather

information, with a web site or a book as reference please let me know. Thank You and yes this is for homework, I can't find it in my book or in my notes.

2007-10-19 12:02:15 · 2 answers · asked by Miss 6 7 in Biology

All recipes with colored pics are fixed alphabetically with ascending numbers in the monitor for breakfast, lunch, dinner and snacks in between...
For instance: I like this No.7 pic for breakfast. I enter this No., and monitor is helpimg me like: to put 16 oz. milk in box # 1,...2 eggs in box # 2, 15 carrots in box # 3, because I wan to drink fresh carrot juice. You can guess - this is a cooking robot without any human invasion...
After 10 minutes everything is comming out - ready for eat....Could this become real and if not - what kind of difficulies will prevent it from manifacturing

2007-10-19 11:58:41 · 2 answers · asked by YAHOO_USER__ 1 in Engineering

The linear approximation (tangent line) at x=0 to (8+2x)^(1/2) is A+Bx
where A=_____
and where B=_____

2007-10-19 11:57:50 · 2 answers · asked by Anonymous in Mathematics

The seven most abundant ions in seawater make up more than 99% by mass of the dissolved compounds. They are listed in units of mg ion/kg sea water: chloride 18,900; sodium 10,560; sulfate 2650; magnesium 1270; calcium 400; potassium 380; hydrogen carbonate 140.
(a) What is the mass % of each ion in seawater.
(b) What percent of the total mass of ions is sodium ion
(c) How does the total mass % of alkaline earth metals compare with the total mass % of alkali metal ions
(d) Which makes up the larger mass fraction of dissolved components, anions, and cations?

Could you just show me a quick set up please?
Also, what are the anions, and cations? (heard the terms last year)

Thanks a bunch!!

2007-10-19 11:57:23 · 2 answers · asked by Anonymous in Chemistry

Pretty sure its a finch of some sort.

http://farm3.static.flickr.com/2168/1641672641_d576c5a43b.jpg?v=0

2007-10-19 11:56:58 · 2 answers · asked by Anonymous in Zoology

x^2 + 16x + a= (X+b)^2

Find a

I have no clue how to do this.

2007-10-19 11:56:12 · 2 answers · asked by In Testimony Whereof 3 in Mathematics

Is it greater number of neurons, more connections per neuron, greater number of instructions processed per second (MIPS), better brain architecture?

How hard-wired is it? (pardon the pun)

What would happen if Albert Einstein was born in Plato's cave with genius-level genes? Will he be stifled and bored to death, or learn more about the deepest intricacies of shadows on rock faces than anyone could ever imagine?

2007-10-19 11:56:06 · 8 answers · asked by anonymous 4 in Medicine

tell me your story!
ghosts, noises anything you could not explain..

2007-10-19 11:55:05 · 20 answers · asked by x_sofia_x 2 in Paranormal Phenomena

2007-10-19 11:52:59 · 1 answers · asked by greenheaven 1 in Mathematics

2007-10-19 11:49:39 · 12 answers · asked by . 4 in Physics

What do I do?

2007-10-19 11:46:34 · 12 answers · asked by Anonymous in Mathematics

Is there a differential equation to predict the dynamics of stock market?

2007-10-19 11:43:07 · 2 answers · asked by BenL 2 in Mathematics

its just that my p.e teacher used to say that to me to. so maybe theres an aroma about me. i think he,s wright tho.

2007-10-19 11:43:06 · 7 answers · asked by random mentalist. 3 in Astronomy & Space

The slower time gets for the person travelling. Because so many people have told me this is ture. i.e. If someone travelled at the speed of light for 20 years and came back to earth they wouldn't have aged a bit.

2007-10-19 11:42:00 · 16 answers · asked by Mark R 3 in Astronomy & Space

I saw many good, seemingly well-informed answers to samantha's question. That is not one of the things I know much about. But I thought the shuttles covered a wide range of altitudes in the many missions. So none of the shuttle missions have been through the Van Allen belts? I thought they had. And the shuttle has better shielding than the Apollo craft, doesn't it?

Before anybody gets knee-jerk, I am not challenging the moon missions. I know we went and I get pi$$ed off at the people who deny that achievement for all those stupid reasons.

2007-10-19 11:38:55 · 5 answers · asked by Brant 7 in Astronomy & Space